Thermo-air cooled pipe stem



Oct. 20, 1931 A. s. HICKEY THERMO AIR'COOLED PIPE STEM Filed June 13, 1930 TTORN Patcntfi st. 20, 1931 TATEd a a, many, or nos antennas; oamronma cams "EHWO-AIR' OOOLED FEE arm Application filed June 18,

This invention relates to tobacco pipe or strainin medium of ow cost so as to be inducive o frequent cleaning of the stem to keep it sweet and wholesome, and free from strong smoke which-will have a biting I "whlch are ofsuch length as to project into efiect on the tongue of the smoker. Additionally, a purpose is to provide a pipe stem structure which will act to preserve a dry pipe bowl'thus eliminating the mattin of soggy tobacco mass which is unburnab e in the pipe and is-a direct loss of so much tobacco, therefore an advantage ofthis is capacity to burn tobacco ordinar' y wasted by reason of saturization; a corollary being a saving on the cost of consumed tobacco.

To further improve the stem and obtain a. cooled stream of smoke to the smokers mouth means are provided to cause a thermically induced flowof cooling air within the stem without the admixture of such air with the educted smoke.

The invention consists of certain advancements in this art as set-forth in the ensuing disclosure and having, with the above; additional objects and advantages, and whose construction, combination and details of means, and manner of operation will be made manifest in the description of the herewith illustrative embodiment; it being understood that modifications, variations and adaptatlons I may be resorted to within the scope, principle and spirit of the invention as herein claimed. Figure 1 is an axial section of the pipe. Figure 2 is a side elevation of a preferred form of straining pack, and Figure 3 is an end view thereof.

Figure 4 1s a -s1de elevation of the jacket of the stem, partly in section.

rovide a y to efto show the separate terminals of double thread channels therein.

3 1930. serial. so; access.

Figure 5 is an end view of the core of the stem, and I Figure 6 is an axial section thereof.

Figure 7 is a plan of one end of the core The stem comprises an exterior jacket or cylindrical sleeve 2 one end of which is screwed. at 3 onto a contiguous connection 4 having anipple 5"to the bowl 6 of the pipe. The opposite end of the sleeve, hereinafter called the jacket, is screwed into the socket of the mouth piece 7 I Snugly fitted in the jacket is a considerably-shorter core 10 havin an inner longi- 435 tudinal. passageway 11 contlnuing intodown turned snouts 12 at the end of the core and respective holes 8 made in the bottom ofthe jacket for such snouts. Therefore, cool air nray pass freely into and from the core; this flow being accelerated by temperature changes in the smoke stream passing through the rovision stem The core 10 is-p-referably; made of some more or less readily deformable material,

" such as rubber which may be flexed under pressure of resistance acting-on thread-like helice's'13 provided along the exterior of the core and forming one channel 14 which is" open to both ends of the core space in the jacket and another. blind channel 15 lying between the turns of the open-end channel 14 which serves as the duct along the core and inside of the overlying jacket wall for the eduction of-smokefrom the bowl 6 to the mouth piece 7 j Figure 7 shows at 15' the blind end of the channel 15 of one-end of the core; it being understood that both of its ends are so blinded. The jacket 2 has a helical arrangement of small vent holes 9 which register with the blind channel 15 so that cooling air may surge in and out as to the channel 15 during use of the pipe.

'It will be seen that the core is internally -"cooled by air passing into the interior passame time the Jacket 2 is prevented from be- Y coming hot an the temperature of the smoke flowing to the mouth piece is kept pleasingly moderate.

5 Since no smoke passes into the internal assageway 11 this. never becomes foule or jammed and therefore needs no. cleaning.

- The smoke is compelled to traverse the accessible channel 14 between the helices Band can therefore be easily cleaned when the stem parts are disassembled for such purpose, as 1s obviously desirable in order to maintain a sweet pipe. 7

As above stated the core 10 is much shor 15 than the jacket 2 and thus provides a space at each end for. the introduction of means which have the function of straining the pass.- ing smoke; first, near the bowl nipple and later as it passes to the mouth piece. Such means comprises a lower pack of fibrous material 17 and a similar upper pack 18; which latter has the further purpose of forming a dam to catch saliva which may seep from the mouth piece. While any convenient mass of fibrous material may be utilized as packs in the jacket, preferably each pack consists of a body of such material mounted on a piece of wire 19 whose ends are exposed so as to he easiiy grasped to enable removal without soiling the fingers of anyone cleaning the pipe. e The helices are suficiently thin as to give a little as the core is pushed into the stem jacket and will therefore make avtight seal therewith when in place to prevent leak of smoke into the adjacent air channel 15, and

vice versa.

What is claimed is: l. A stem, for a tobacco pipe, including an 40 outer jacket and an inner core removable therefrom and having an exterior air channel; the jacket having a'system of apertures opening to the said channel. 7

2. A pipe stem including a jacket, and a removable core in the jacket having end snouts leading to a longitudinal passageway in the core; said jacket having holes for said snouts to open through for air flow in the passageway. 3. A pipe stem including a jacket attachable at its ends to a bowl and to a mouth piece, a removable core in the jacket forming a smoke channel therein, and straining media at each end of the core to catch liquid substance.

v 4. A tobacco pipe stem including a jacket, and a core having a double system of helices whose ridges fit snugly in the jacket and which form an open-ended smoke channel along the core and a blind-end channel between the turns of the smoke channel the jacket having air inlets to the blind channel. 7

Y A. S. HICIEY. 

